SLC2A1 and laryngeal carcinoma: The data concerning the expression of GLUT1 and GLUT3 transcripts or, most often, protein immunoexpression identified in laryngeal cancer cases were found to be very similar to ours: the mean frequency of GLUT1 was in the range 50.3–98 % while GLUT3 positive expression was less so [8, 18, 21, 22, 24–26].